Finding the Fourth Proportional to 3,978.09, 5,960.70 and 2,330.55

Step by Step Solution

1. Step 1: Write the proportion equation
   3,978.09 : 5,960.70 = 2,330.55 : x
2. Step 2: Convert to fraction form
   3,978.09/5,960.70 = 2,330.55/x
3. Step 3: Cross multiply
   3,978.09x = 5,960.70 × 2,330.55
4. Step 4: Simplify right side
   3,978.09x = 13,891,709.39
5. Step 5: Solve for x
   x = 13,891,709.39/3,978.09
6. Step 6: Final answer
   x = 3,492.06